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147 lines
3.1 KiB
C++
147 lines
3.1 KiB
C++
//
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// TemporaryFile.cpp
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//
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// $Id: //poco/svn/Foundation/src/TemporaryFile.cpp#2 $
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//
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// Library: Foundation
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// Package: Filesystem
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// Module: TemporaryFile
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/TemporaryFile.h"
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#include "Poco/Path.h"
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#include "Poco/Exception.h"
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#include "Poco/Process.h"
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#include "Poco/Mutex.h"
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#include <set>
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#include <sstream>
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namespace Poco {
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class TempFileCollector
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{
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public:
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TempFileCollector()
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{
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}
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~TempFileCollector()
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{
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for (std::set<std::string>::iterator it = _files.begin(); it != _files.end(); ++it)
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{
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try
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{
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File f(*it);
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if (f.exists())
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f.remove(true);
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}
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catch (Exception&)
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{
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}
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}
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}
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void registerFile(const std::string& path)
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{
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FastMutex::ScopedLock lock(_mutex);
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Path p(path);
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_files.insert(p.absolute().toString());
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}
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private:
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std::set<std::string> _files;
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FastMutex _mutex;
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};
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TemporaryFile::TemporaryFile(): File(tempName()), _keep(false)
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{
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}
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TemporaryFile::~TemporaryFile()
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{
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if (!_keep)
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{
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try
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{
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if (exists())
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remove(true);
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}
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catch (Exception&)
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{
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}
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}
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}
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void TemporaryFile::keep()
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{
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_keep = true;
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}
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void TemporaryFile::keepUntilExit()
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{
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_keep = true;
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registerForDeletion(path());
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}
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void TemporaryFile::registerForDeletion(const std::string& path)
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{
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static TempFileCollector fc;
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fc.registerFile(path);
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}
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std::string TemporaryFile::tempName()
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{
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std::ostringstream name;
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static FastMutex mutex;
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static unsigned long count = 0;
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mutex.lock();
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unsigned long n = count++;
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mutex.unlock();
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name << Path::temp();
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name << "tmp" << Process::id();
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for (int i = 0; i < 6; ++i)
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{
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name << char('a' + (n % 26));
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n /= 26;
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}
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return name.str();
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}
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} // namespace Poco
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